EP 4138155 A1 20230222 - PREPARATION METHOD OF CATHODE MATERIAL FOR SECONDARY BATTERY
Title (en)
PREPARATION METHOD OF CATHODE MATERIAL FOR SECONDARY BATTERY
Title (de)
VERFAHREN ZUR HERSTELLUNG VON KATHODENMATERIAL FÜR SEKUNDÄRBATTERIEN
Title (fr)
PROCÉDÉ DE PRÉPARATION DE MATÉRIAU DE CATHODE POUR BATTERIE SECONDAIRE
Publication
Application
Priority
TW 110130344 A 20210817
Abstract (en)
A preparation method of a cathode material for a secondary battery is provided. First, a lithium metal phosphate material and a first conductive carbon (C1) are provided. The lithium metal phosphate material is made of a plurality of secondary particles (10). Each of the secondary particles (10) is formed by the aggregation of a plurality of primary particles (100). An interparticle space (200) is formed between the plurality of primary particles (100). Next, the lithium metal phosphate material and the first conductive carbon (C1) are mixed by a mechanical method, and a composite material (1) is prepared. The first conductive carbon (C1) is uniformly arranged in the interparticle space (200). After that, a second conductive carbon (C2), a binder (B) and a solvent are provided. Finally, the composite material (1), the second conductive carbon (C2), the binder (B) and the solvent are mixed, and a cathode material for preparing a positive plate (2) is prepared.
IPC 8 full level
H01M 4/136 (2010.01); C01B 25/45 (2006.01); C01G 49/00 (2006.01); H01M 4/1397 (2010.01); H01M 4/58 (2006.01); H01M 10/04 (2006.01); H01M 10/052 (2010.01)
CPC (source: EP KR US)
C01B 25/45 (2013.01 - EP); H01M 4/0404 (2013.01 - US); H01M 4/0471 (2013.01 - US); H01M 4/136 (2013.01 - EP KR); H01M 4/1397 (2013.01 - EP KR US); H01M 4/362 (2013.01 - KR); H01M 4/5825 (2013.01 - EP KR US); H01M 4/621 (2013.01 - KR); H01M 4/625 (2013.01 - KR US); H01M 10/04 (2013.01 - EP); H01M 10/052 (2013.01 - EP); H01M 10/0525 (2013.01 - US); H01M 2004/021 (2013.01 - KR US); H01M 2004/028 (2013.01 - KR US); Y02E 60/10 (2013.01 - EP)
Citation (search report)
- [XI] CN 109326779 A 20190212 - SOUNDON NEW ENERGY TECH CO LTD
- [X] US 2011070499 A1 20110324 - HUANG HAITAO [US], et al
- [A] JP 6841362 B1 20210310
- [A] US 2010112449 A1 20100506 - FUJITA HIDEAKI [JP], et al
- [A] US 2014295275 A1 20141002 - KAY ANDREAS [CH]
- [A] US 2018277846 A1 20180927 - OONO KOUJI [JP], et al
- [A] US 2011136014 A1 20110609 - KAY ANDREAS [DE]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4138155 A1 20230222; AU 2022202807 A1 20230309; AU 2022202807 B2 20230817; CA 3157295 A1 20230217; CN 115911360 A 20230404; JP 2023027744 A 20230302; JP 7358551 B2 20231010; KR 20230026240 A 20230224; TW 202310476 A 20230301; TW I762404 B 20220421; US 11837713 B2 20231205; US 2023063332 A1 20230302
DOCDB simple family (application)
EP 22170296 A 20220427; AU 2022202807 A 20220428; CA 3157295 A 20220426; CN 202210455479 A 20220427; JP 2022072785 A 20220426; KR 20220050830 A 20220425; TW 110130344 A 20210817; US 202117412259 A 20210826